56F8356 Description
The 56F8356 is a member of the 56800E core-based family of hybrid controllers. It combines, on a single chip, the processing power of a DSP and the functionality of a microcontroller with a flexible set of peripherals to create an extremely cost-effective solution. Because of its low cost, configuration flexibility, and compact program code, the 56F8356 is well-suited for many applications. The 56F8356 includes many peripherals that are especially useful for motion control, smart appliances, steppers, encoders, tachometers, limit switches, power supply and control, automotive control, engine management, noise suppression, remote utility metering, industrial control for power, lighting, and automation applications.

56F8356 Features
Digital Signal Processing Core
• Efficient 16-bit 56800E family hybrid controller engine with dual Harvard architecture
• As many as 60 Million Instructions Per Second (MIPS) at 60MHz core frequency
• Single-cycle 16 × 16-bit parallel Multiplier-Accumulator (MAC)
• Four 36-bit accumulators, including extension bits
• Arithmetic and logic multi-bit shifter
• Parallel instruction set with unique DSP addressing modes
• Hardware DO and REP loops
• Three internal address buses
• Four internal data buses
• Instruction set supports both DSP and controller functions
• Controller style addressing modes and instructions for compact code
• Efficient C compiler and local variable support
• Software subroutine and interrupt stack with depth limited only by memory
• JTAG/EOnCE debug programming interface

Memory
• Harvard architecture permits as many as three simultaneous accesses to program and data memory
• Flash security protection feature
• On-chip memory, including a low-cost, high-volume Flash solution
    — 256KB of Program Flash
    — 4KB of Program RAM
    — 8KB of Data Flash
    — 16KB of Data RAM
    — 16KB of Boot Flash
• Off-chip memory expansion capabilities programmable for 0 - 30 wait states
    — Access up to 1MB of program memory or 1MB of data memory
    — Chip select logic for glueless interface to ROM and SRAM
• EEPROM emulation capability
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